[Dsg-htcc] Revised HTCC components

[Marc McMullen]

Hi Youri and Nick,

We met a couple of weeks ago and discussed a better strategy to supply 
CO2 to the detector in the hall. Currently, we use a mass flow 
controller, which in the case of an outage which would outlast the UPS 
would close. The solution is to change this to a mass flow transducer on 
the detector inlet, which would be supplied by a standard rotameter 
installed in the gas shed. This set up would then supply gas in any 
condition and still be adjustable without entering the Hall.

The rough estimate for the new equipment would be approximately $3200 
which would include one transducer, plus a spare, and a rotameter.  
George is preparing an dollar figure quote and augmenting the drawings.

Once you receive the quote from us, please let us know how to proceed 
with the procurement as soon as possible.

Thanks,

-- 
Marc McMullen
Detector Support Group
757-269-7738